I'm planning a trip in which we'll rent a car in LA in late January, 2014, we will then go north and then to South Lake Tahoe. After a few days of skiing we plan to go down to Las Vegas.
Will I need ...

I want to travel from SF to Las Vegas and spend 4 days in LA in the middle. Well I want to rent a car to do all the path, but the following question came to my mind:
What is the minimum age to rent ...